JPH0633852B2 - Double shell tank - Google Patents
Double shell tankInfo
- Publication number
- JPH0633852B2 JPH0633852B2 JP63292005A JP29200588A JPH0633852B2 JP H0633852 B2 JPH0633852 B2 JP H0633852B2 JP 63292005 A JP63292005 A JP 63292005A JP 29200588 A JP29200588 A JP 29200588A JP H0633852 B2 JPH0633852 B2 JP H0633852B2
- Authority
- JP
- Japan
- Prior art keywords
- side wall
- tank
- inner tank
- concrete
- outer tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、二重殼タンクに関するもので、特に低温液
化ガス等を低温度で貯留する二重殼タンクに関するもの
である。TECHNICAL FIELD The present invention relates to a double shell tank, and more particularly to a double shell tank for storing low temperature liquefied gas and the like at a low temperature.
低温液化ガス等を貯留するタンクは周囲に悪影響を与え
るのを防ぐために、金属製の内槽側壁とコンクリート製
の外槽側壁との間に断熱材を設けている。A tank for storing low-temperature liquefied gas or the like is provided with a heat insulating material between a side wall of an inner tank made of metal and a side wall of an outer tank made of concrete in order to prevent adverse effects on the surroundings.
このような断熱材として粒状パーライトを採用し、これ
を内槽と外槽の間に充填するか、或いは断熱材としてポ
リウレタンフォーム等の板状断熱材を使用し、これを外
槽壁側の内側に貼りつける、または吹付けることが行わ
れている。Granular perlite is used as such a heat insulating material, and it is filled between the inner tank and the outer tank, or a plate-like heat insulating material such as polyurethane foam is used as the heat insulating material, and this is used inside the outer tank wall It is pasted or sprayed on.
上記した粒状パーライトを使用した断熱構造には以下の
ような問題がある。The heat insulating structure using the above-mentioned granular perlite has the following problems.
イ貯溜量の変化に応じて内槽側壁の直径が伸び縮みする
ため、縮んだとき内槽側壁が縮んでできた空隙に粒状パ
ーライトが落ち込み、伸びたときにそのパーライトを押
し固めてしまう。その伸縮によって断熱性能が劣化する
とともに粒状パーライトの補給をしなければならない。B. The diameter of the inner tank side wall expands and contracts according to the change in the amount of storage, and when it shrinks, the granular perlite falls into the void created by the contraction of the inner tank side wall, and when it expands, the perlite is compacted. Due to the expansion and contraction, the heat insulation performance is deteriorated, and granular perlite must be replenished.
ロ内槽側壁破損時には、粒状パーライトが液化ガスに浸
ることになり、急激に断熱性が損なわれる。従って液化
ガスの急激な気化が起こり、多大なガス圧が発生するた
め、外槽側壁の設計圧力を大きくする必要があり、外槽
側壁の鉄筋量、ＰＣ鋼材量が増加する。(B) When the side wall of the inner tank is damaged, the granular pearlite will be immersed in the liquefied gas, and the heat insulation property will be rapidly impaired. Therefore, since the liquefied gas is rapidly vaporized and a large amount of gas pressure is generated, it is necessary to increase the design pressure of the outer tank side wall, and the amount of rebar and PC steel on the outer tank side wall is increased.
またこのガス圧のために屋根部分が破損し周辺へのガス
拡散が起こる。屋根の破損を防ぐためにこの気化ガスを
処理しようとすると大容量のコンプレッサーが必要にな
る。In addition, this gas pressure causes damage to the roof part and causes gas diffusion to the surrounding area. Attempting to treat this vapor to prevent roof damage requires a large capacity compressor.
ハ上記したようにガスが内槽と外槽との間に漏れた場
合、外槽内側のシールメタルに低温液化ガスが接触し、
シールメタルに特別な耐低温材（９％ニッケル鋼など）
を用いる必要があり高価である。When the gas leaks between the inner tank and the outer tank as described above, the low temperature liquefied gas comes into contact with the seal metal inside the outer tank,
Special low temperature resistant material for seal metal (9% nickel steel, etc.)
Is necessary and expensive.
ニまた低温液化ガスによって外槽側壁が低温にさらされ
ると、外槽側壁に大きな温度荷重が発生し、破損するこ
とがある。Further, when the outer tank side wall is exposed to a low temperature by the low temperature liquefied gas, a large temperature load is generated on the outer tank side wall, and the outer tank side wall may be damaged.
また上記した断熱板を使用した方法では次のような問題
がある。Further, the method using the heat insulating plate described above has the following problems.
断熱板（ポリウレタンフォーム）に低温液化ガスが接触
した場合、断熱板にクラックが生じたり、液化ガスが浸
透し、前記粒状パーライトを使用した場合の問題である
ロ、ハ、ニと同じ問題が生じる。When low-temperature liquefied gas comes into contact with the heat insulating plate (polyurethane foam), cracks occur in the heat insulating plate, or liquefied gas penetrates, and the same problems as those in the case of using granular perlite described above occur. .
この発明は以上のような課題を解決するためになされた
もので、安価に施工できる二重殼タンクを提供すること
を目的とする。The present invention has been made to solve the above problems, and an object thereof is to provide a double shell tank that can be constructed at low cost.
この発明にかかる二重殼タンクは、金属側壁とコンクリ
ート外槽側壁の間、および内槽・外槽屋根の間に黒曜石
発泡粒を骨材となした断熱コンクリートを配してなるこ
とを特徴とする。The double shell tank according to the present invention is characterized in that heat-insulating concrete having obsidian foam granules as an aggregate is arranged between the metal side wall and the concrete outer tank side wall and between the inner tank and the outer tank roof. To do.
以下、図に示す一実施例に基づき、この発明を詳細に説
明する。The present invention will be described in detail below based on an embodiment shown in the drawings.
図において１はコンクリート造の底版であって、この底
版１上に底部断熱材２が敷かれ、その上に金属製の内槽
底版３が敷かれている。内槽底版３としては耐低温材で
ある９％ニッケル鋼などが使用される。In the figure, 1 is a concrete bottom plate, on which a bottom heat insulating material 2 is laid, and on top of which a metal inner tank bottom plate 3 is laid. As the inner tank bottom plate 3, 9% nickel steel or the like, which is a low temperature resistant material, is used.
内槽底版３の外周部からは上方に向かって立ち上がる金
属製の内槽側壁４が円形に形成されており、この内槽側
壁４上方を同じく金属製の内槽屋根５が覆っている。内
槽側壁４と内槽屋根５も共に耐低温性の９％ニッケル鋼
などによって形成されている。A metal inner tank side wall 4 rising upward from the outer peripheral portion of the inner tank bottom plate 3 is formed in a circular shape, and a metal inner tank roof 5 also covers the inner tank side wall 4 above. Both the inner tank side wall 4 and the inner tank roof 5 are made of low-temperature-resistant 9% nickel steel or the like.
内槽側壁４の周囲に、この内槽側壁４から若干離れてプ
レストレストコンクリートによって形成された外槽側壁
６が起立している。この外槽側壁６の上方を外槽屋根７
が覆っている。外槽屋根７は金属製でもコンクリート製
であってもよい。Around the inner tank side wall 4, an outer tank side wall 6 formed of prestressed concrete stands up at a distance from the inner tank side wall 4. The outer tank roof 7 is located above the outer tank side wall 6.
Is covered. The outer tank roof 7 may be made of metal or concrete.
内槽側壁４と外槽側壁６との間、及び内槽屋根５と外槽
屋根７間には鉄筋９が配筋され、断熱コンクリート８が
打設されている。断熱コンクリート８は断熱性を有する
コンクリートであって、黒曜石発泡粒を骨材として混入
したコンクリートからなる。Reinforcing bars 9 are arranged between the inner tank side wall 4 and the outer tank side wall 6 and between the inner tank roof 5 and the outer tank roof 7, and heat insulating concrete 8 is cast. The heat insulating concrete 8 is a heat insulating concrete and is made of concrete in which obsidian foam particles are mixed as an aggregate.
黒曜石発泡粒はパーライト発泡体と同様にガラス質発泡
体に属するが、パーライト発泡体に比べ、強度が高く独
立気泡に富み、コンクリートの骨材として用いた場合、
コンクリートの打設圧によって圧縮されがたく、かつ気
泡内に液体等が浸透しがたい。黒曜石発泡粒を骨材とな
し、比重0.3〜0.5となした断熱コンクリートは、熱伝導
率0.07〜0.12kcal／ｍ・hr・℃とすることができ、同時
に、粒状パーライトの断熱層やウレタンフォーム断熱板
に比べ、液化ガス等が浸透しがく、熱伸縮性も小とな
る。従って、液化ガス等を貯留する二重殼タンクの内外
槽間に配する断熱材として好適である。Obsidian foam granules belong to vitreous foams like perlite foams, but are stronger and richer in closed cells than perlite foams, and when used as concrete aggregates,
It is hard to be compressed by the pouring pressure of concrete, and it is difficult for liquid etc. to penetrate into the bubbles. Heat-insulated concrete with obsidian foam granules as aggregate and specific gravity of 0.3-0.5 can have a thermal conductivity of 0.07-0.12kcal / m ・ hr ・ ° C. At the same time, a heat-insulating layer of granular pearlite and urethane foam insulation Compared to a plate, liquefied gas, etc. are less likely to penetrate, and thermal expansion and contraction are smaller. Therefore, it is suitable as a heat insulating material arranged between the inner and outer tanks of the double shell tank for storing liquefied gas and the like.
比重0.45熱伝導率0.102kcal／ｍ・hr・℃の配合例を下
記の表に示す。The following table shows examples of formulations with a specific gravity of 0.45 and thermal conductivity of 0.102 kcal / m · hr · ° C.
〔発明の効果〕 この発明は以上のような構造を有し、以下のような効果
を得ることができる。 [Advantages of the Invention] The present invention has the structure as described above, and can obtain the following effects.
内槽側壁が貯溜量の変化に応じて変化しても、断熱コ
ンクリートは変形、収縮しないため、粒状パーライトを
充填した断熱層のように断熱性能が低下したり、補修が
必要となることがない。Even if the side wall of the inner tank changes according to the change in the storage amount, the heat insulating concrete does not deform or shrink, so there is no need to reduce the heat insulating performance or repair like the heat insulating layer filled with granular perlite. .
この断熱コンクリートは、内槽側壁が破損して、液化
ガスに直接接触しても、ウレタンフォーム断熱板のよう
にクラックを発生して破損したり、断熱性を失ったりし
ないので、急激な液化ガスの気化の発生を防止できる。
従ってガス圧の発生の為に外槽の鉄筋量、ＰＣ鋼材量を
大きくする必要などがなく、安価に施工できる。This heat-insulating concrete does not generate cracks or lose heat insulation like a urethane foam insulation plate even if the inner tank side wall is damaged and comes into direct contact with liquefied gas. The vaporization of can be prevented.
Therefore, it is not necessary to increase the amount of rebar and PC steel in the outer tank due to the generation of gas pressure, and the construction can be performed at low cost.
外槽側壁のシールメタルに低温液化ガスが触れる恐れ
はなく、シールメタルを安価な常温材（ＳＳ41材など）
にすることができる。また外槽そのものの破損の危険が
ない。There is no risk of low temperature liquefied gas coming into contact with the seal metal on the side wall of the outer tank, and the seal metal is an inexpensive room temperature material (SS41 material etc.)
Can be Also, there is no risk of damage to the outer tank itself.
第１図は二重殼タンクの断面図、第２図は第１図のII部
拡大図である。 １……底版、２……底部断熱材、３……内槽底版、４…
…内槽側壁、５……内槽屋根、６……外槽側壁、７……
外槽屋根、８……断熱コンクリート、９……鉄筋。FIG. 1 is a sectional view of the double shell tank, and FIG. 2 is an enlarged view of a portion II in FIG. 1 ... Bottom plate, 2 ... Bottom heat insulating material, 3 ... Inner tank bottom plate, 4 ...
… Inner tank side wall, 5 …… Inner tank roof, 6 …… Outer tank side wall, 7 ……
Outer tank roof, 8 ... Insulating concrete, 9 ... Reinforcing bar.
Claims (1)
壁を形成した二重殼タンクにおいて、 金属内槽側壁とコンクリート外槽側壁との間および内槽
・外槽屋根の間に黒曜石発泡粒を骨材となした断熱コン
クリートを配してなることを特徴とする二重殼タンク。1. A double shell tank in which a concrete outer tank side wall is formed on the outer periphery of a metal inner tank side wall, wherein obsidian foam particles are present between the metal inner tank side wall and the concrete outer tank side wall and between the inner tank and the outer tank roof. A double shell tank characterized by arranging heat-insulating concrete that is used as an aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63292005A JPH0633852B2 (en) | 1988-11-18 | 1988-11-18 | Double shell tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63292005A JPH0633852B2 (en) | 1988-11-18 | 1988-11-18 | Double shell tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02138599A JPH02138599A (en) | 1990-05-28 |
| JPH0633852B2 true JPH0633852B2 (en) | 1994-05-02 |
Family
ID=17776297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63292005A Expired - Lifetime JPH0633852B2 (en) | 1988-11-18 | 1988-11-18 | Double shell tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633852B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2606485C1 (en) * | 2015-08-14 | 2017-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Калмыцкий государственный университет имени Б.Б. Городовикова" | Metal vertical seismic tank |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60117000A (en) * | 1983-11-29 | 1985-06-24 | Ishikawajima Harima Heavy Ind Co Ltd | Sealing for outer-tank of low-temperature double-shell tank |
| JPS63111399A (en) * | 1986-10-28 | 1988-05-16 | Tokyo Gas Co Ltd | Method of building low temperature tank having outer concrete tank |
-
1988
- 1988-11-18 JP JP63292005A patent/JPH0633852B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02138599A (en) | 1990-05-28 |
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